White blood cells (WBCs) are essential defenders of the immune system, protecting the body from infections, bacteria, and viruses. They include neutrophils, lymphocytes, monocytes, eosinophils, and basophils, each playing a unique role in fighting pathogens and maintaining health. For instance, neutrophils rapidly attack invading microbes, while lymphocytes create antibodies for long-term defense. A healthy WBC count indicates a strong immune response, whereas low or high levels may signal underlying conditions. Infections are often managed with antibiotics, and healthcare providers may recommend treatments such as ceftriaxone injection wholesale supplies for hospitals and clinics to ensure effective patient care and infection control.